c94ff0f240
git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/branches/HADOOP-4687/core@776175 13f79535-47bb-0310-9956-ffa450edef68
53 lines
1.7 KiB
Bash
Executable File
53 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Start hadoop dfs daemons.
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# Optinally upgrade or rollback dfs state.
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# Run this on master node.
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usage="Usage: start-dfs.sh [-upgrade|-rollback]"
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bin=`dirname "$0"`
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bin=`cd "$bin"; pwd`
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. "$bin"/hdfs-config.sh
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# get arguments
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if [ $# -ge 1 ]; then
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nameStartOpt=$1
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shift
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case $nameStartOpt in
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(-upgrade)
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;;
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(-rollback)
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dataStartOpt=$nameStartOpt
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;;
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(*)
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echo $usage
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exit 1
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;;
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esac
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fi
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# start dfs daemons
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# start namenode after datanodes, to minimize time namenode is up w/o data
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# note: datanodes will log connection errors until namenode starts
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"$HADOOP_CORE_HOME"/bin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script "$bin"/hdfs start namenode $nameStartOpt
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"$HADOOP_CORE_HOME"/bin/hadoop-daemons.sh --config $HADOOP_CONF_DIR --script "$bin"/hdfs start datanode $dataStartOpt
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"$HADOOP_CORE_HOME"/bin/hadoop-daemons.sh --config $HADOOP_CONF_DIR --hosts masters --script "$bin"/hdfs start secondarynamenode
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